In which of the following (aq) solutions would you expect AgBrto have the lowest
ID: 75861 • Letter: I
Question
In which of the following (aq) solutions would you expect AgBrto have the lowest solubility? a. pure water b. 0.20 M NaBr c. 0.10M AgNO3 d. 0.15M KBr e. 0.10M LiBr The answer is b, but how do I know this? How can I solvefor the above mathematically, pls? In which of the following (aq) solutions would you expect AgBrto have the lowest solubility? a. pure water b. 0.20 M NaBr c. 0.10M AgNO3 d. 0.15M KBr e. 0.10M LiBr The answer is b, but how do I know this? How can I solvefor the above mathematically, pls?Explanation / Answer
b. 0.20 M NaBr ---------because this produces 0.20 MBr- Recall the common-ion effect: the solubility of the substancedecreases if it is placed in a solution that contains an ion thatis also contained in the substance. ANy solution that contains Ag+ or Br- will decrease thesolubility of AgBr in that solution. THus, from the given choices, AgBr is most soluble in pure water,and least in 0.20 NaBr. :-|